CNRM activities during CNRM activities during C C arbo arbo E E urope urope R R egional egional E E xperiment xperiment S S trategy trategy - forecasting support - wind profiler - Ceilometer - Radiosonde soundings - Surface flux station - drifting balloons - Piper Aztec Flights
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CNRM activities during CNRM activities during CCarboarboEEurope urope RRegional egional EExperiment xperiment SStrategytrategy
• Weather forecasts from the operational service of MF- summary of the situation of the day delivered on the website- forecaster present at the morning briefing (& evening if IOP)- Aladin outputs at D+1, D+2, D+3
• Aladin outputs to force the STILT model (10 km, 72H)• trajectories and back-trajectories from Aladin• Available MesoNH outputs :
- horizontal wind (at 500m and 10m)- mixing heights of BL- vertical profiles in BISCAROSSE, CS, MARMANDE (, TKE, wind)- vertical cross-section of mixing ratio for cloud/vapor
Configuration : 2 nested models (240x240km at 8km and 60x60km at 2km)Beginning of the simulation with ALADIN forecast (10km) at D+ 27hTU End of the simulation : D+42h TU (8 km and 2km)
Wind profilerWind profiler
• Location : La Cape Sud (agricultural buildings)
• Continuous dataset from 05/18 to 05/25 (14 UTC) and 06/02 to 06/23
• Low mode configuration : profiles of wind speed and direction between 0- 2500m
Wind profilerWind profiler
RS at La Cape Sud : 11UTC
Wind direction (°)
Wind speed (m/s)
0° 180° 360°
0m/s 5m/s 10m/sdirection
speed
IOP5 : Wednesday 15 June 2005
CeilometerCeilometer• Useful to follow the Atmospheric Boundary Layer development
<1500m in conditions of high specific humidity• Deduced from sharp transitions in the profile of backscattered
signal, related to the difference in aerosol and /or water vapor concentrations between the BL height and the overlying free troposphere
• Example of June 19 : maritime entrances in the morning
RS La Cape Sud 17 UTC
1000m
2000m
3000m
zi
Radiosonde soundings Radiosonde soundings
• Performed during IOP : 5, 8, 11, 14, 17, 23UTC• In La Cape Sud : 96 with 5 to 6 per IOP day • In Toulouse : 16 at 11 UTC• Well-mixed and well developed ABL / strong
nocturnal inversion ( 10K/200m)- max : 2000m on 05/27 & 2300m on 06/18
Saturday 18 June 5 UTC and 14 UTCLa Cape Sud
Surface fluxes stationsSurface fluxes stations
- Le Fauga (south of Toulouse)
- Saint Sardos (North East of Toulouse)
- La Cape Sud (les Landes)
Surface fluxes stationSurface fluxes station
- Le Fauga: fallow
measurements : meteorological parameters, profiles of soil water content and soil temperature,- Soil density, LAI, CO2 flux and energy balance- radiometer IR
Profiles of soil temperatures between 06/13 and 06/21 at :- 1m- 5m- 20m- 50m- 90m
Surface fluxes stationSurface fluxes station
- Saint Sardos : maize field
- measurements at 2m: meteorological parameters, profiles of soil water content and soil temperature,-Soil density, LAI, CO2 flux and energy balanceW
/m²
Saint Sardos – 27 May 20050H00- 23H59 UTC
LeHsGRn
Surface fluxes station : Surface fluxes station : EC and REA systems EC and REA systems
• La Cape Sud : beans field• Eddy Correlation system at
2m • Continuous measurements
from 05/15 to 06/23• Meteo parameters, soil
water content and temperature, LAI and biomass
• CO2, sensible and latent heat fluxes, momentum
+ Ozone fluxes (INRA)
Surface fluxes stationSurface fluxes station
• La Cape Sud : beans field• Relaxed Eddy Accumulation
system at 2m • Continuous measurements
from 05/15 to 06/23
• CO2, NOx and latent heat fluxes
for CO2 : Li6262
for NOx : TEI 42 CTL
• In addition : NO soil emissions (performed by Laboratoire d’Aérologie)